Not going to make it to watch 5th set. Pretty amazing match between SEC man Tennys Sandgren and Federererererer. Rog fought off 7 match points to stay alive. A few really odd moments too, with Federer getting fined for uttering an obscenity. Tennys was taken out sort of by a ball boy, or court assistant between switches during the tiebreaker,and was hobbling. A few odd points where it looked like Tennys deked Roger successfully.
I don't think a collegiate player has reached a semis in a very long time. Guess I'll watch 5th in morning.